Answer to 2nd point.
My Sunny 1974 is converted to CDI system from point system and its working great. Mechanic bought CDI distributor of new model sunny from Bilal gunj Lahore and fitted its CDI kit in old Distributor.. and it costed me around 2k Rs
you can check my blogpost Fixing Ignition Timing of my Sunny 120Y (DIY) | levelx.me